Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
CONCLUDING EEMARKS Where possible, laboratory techniques and equipment were used in these tests. This was done in order to obtain the best possible data in the fi e l d . The use of this equipment did not, however, alleviate the need for intensive planning and preparation prior to ar r i v a l at the test s i t e . Analyses using nominal properties were made to anticipate strength of the various tests planned. Then the loading system was designed and instrumentation selected. When this work was complete a detailed plan for the tests was written. Detailed l i s t s of equipment were prepared and purchase orders placed. A l l these acti v i t i e s were part of the pre-test planning and prepara- tion. Before arriving at the test s i t e , a l l pieces of equipment were inspected. Elements of the loading system were tested and rams were calibrated. The various measiiring devices were checked for proper operation ajid were calibrated. In setting up and conducting the tests, attention was given that correct methods were being applied. Equipment was arranged and checked for oper- ation. Raw test data were examined to detect possible soiirces of error or faulty equipment. After the tests were complete, a l l equipment was again examined and c a l i - brated. Any difference in calibration before and after the test was traced to determine the source and significance of the discrepancy. 2-15
On the basis of these tests, i t appears that successful f i e l d tests can be conducted using laboratory-developed procedures. I f proper control i s applied, f i e l d measurements can be made with an acc\iracy comparable to that obtained in the laboratory. 2-16
FIGURES
STRAND GRIP 3 0 TON C E N T E R HOLE RAM STRAND GRIP II/4" THICK t W A F F L E S L A B l"(D .HOLE - . r . 0.6 0 S T R A N D STRAND GRIP DOUBLE- NUT FOUNDATION 28" 24 A TRANSITION D E V I C E ROCK ANCHOR BOLT - T 'c j ) x 4 2 " HOLE F I L L E D WITH GROUT ^ ' 1 V <p HOLE I F I G . 1 DETMT^ OF LOADING EQJIPMEntT 17
FIG. 2 ROCK ANCHOR 18
^^^^ FIG. 5 MACHINE USED TO REMOVE WATERPROOFING 19
FIG. h RAMS IN POSITION 20
FIG. 5 ATTACHMENT OF LOAD EgjIPMENT TO FOUITOATIOW SLAB 21
FIG. 6 RAM CAUBRATION SETUP 22
'A ro (JO 0 */r6 /oeo/>st. FIG. 7 REPRESENTATIVE RAM CAUBRATION CURVES
V FIG. 8 HYDRAULIC PUMP
FIG. 9 PRECISION LEVELING INSTRUMENT 25
OH 11- 9 H i STANDARD / B A R 1 5 H 4 H 3H 2 H OH DEFLECTION' TARGET 10 FIG. 10 STANDARD BAR AND DEFLECTION TARGET 26
